CN210325249U - Cable conductor - Google Patents
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- CN210325249U CN210325249U CN201921332636.0U CN201921332636U CN210325249U CN 210325249 U CN210325249 U CN 210325249U CN 201921332636 U CN201921332636 U CN 201921332636U CN 210325249 U CN210325249 U CN 210325249U
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Abstract
The utility model relates to the technical field of cables, concretely relates to electricityThe cable conductor comprises a stranded conductor and a braided conductor layer coated on the outer surface of the stranded conductor. The stranded conductor adopts the mode of combined type conductor unit, the stranded conductor includes that a plurality of first conductor unit are twisted, first conductor includes that a plurality of second conductor unit are twisted, compounds till the xth conductor unit according to the selected area, and the xth conductor unit includes that a plurality of conductor monofilament bunch form. The arrangement mode of each group of the plurality of conductor units is 4 layers at most, the arrangement mode is n layers, n =2,3,4, the 1 st, 2,3,4 layers are sequentially arranged from inside to outside, the 1 st layer in the center is provided with 1 x conductor unit, the 2 nd layer is provided with 6 x conductor units, the 3 rd layer is provided with 12 x conductor units, the 4 th layer is provided with 18 x conductor units, the n1The layer surrounds the n-th1-1 layer forming a ring of uniform alignment.
Description
Technical Field
The utility model relates to the technical field of cables, especially a cable conductor.
Background
With the acceleration of the urbanization development process, the application scale of the large-section cable line in each big city is increased year by year. For example, grounding and short-circuiting of portable devices in railway systems, fault current devices, ac systems and transmission and distribution networks, and the use of large-section, high-flexibility safety cables in some large-scale equipment installations are required.
At present, domestic cable manufacturing processes are different in size, and particularly, a solid conductor, a bunch or twisted (including composite twisted) conductor, compression assembly and the like are generally adopted in a cable conductor part. In order to achieve high flexibility, under the condition that a bunch and a stranding pitch are in a certain range, the conductor is generally solved by adopting a method of reducing the diameter of a single wire and increasing the number of conductors, but for a large-section cable, the standard of high flexibility is achieved, after the diameter of the single wire is reduced to a certain degree, the single wire (especially the single wire of the conductor in contact with an insulating layer) of a cable core conductor is easy to break and damage insulation in the frequent bending process of the cable, the service life of the cable is shortened, and safety accidents are even caused.
SUMMERY OF THE UTILITY MODEL
The invention of the utility model aims to: the cable conductor has the advantages of long service life, high safety and the like, and can be suitable for frequently moving, bending or mechanical long-term reciprocating cables.
In order to realize the purpose, the utility model discloses a technical scheme be:
a cable conductor comprises a stranded conductor and a braided conductor layer, wherein the braided conductor layer is coated on the outer surface of the stranded conductor.
The stranded conductor comprises a plurality of first conductor units which are stranded into a whole.
The plurality of first conductor units are arranged in an n-shaped manner1Layer n1The number of layers is 1,2,3 and 4, the layers are sequentially arranged from inside to outside, the 1 st layer in the center is provided with 1 first conductor unit, the 2 nd layer is provided with 6 first conductor units, the 3 rd layer is provided with 12 first conductor units, the 4 th layer is provided with 18 first conductor units, the nth layer1The layer surrounds the n-th1-1 layer forming a ring of uniform alignment.
The first conductor unit comprises a plurality of second conductor units which are twisted into a whole.
The plurality of second conductor units are arranged in a mode of n2Layer n2And the layers are sequentially arranged into 1 st, 2 nd, 3 th and 4 th layers from inside to outside, wherein the 1 st layer is provided with 1 second conductor unit, the 2 nd layer is provided with 6 second conductor units, the 3 rd layer is provided with 12 second conductor units, the 4 th layer is provided with 18 second conductor units, and the nth layer is arranged2The layer surrounds the n-th2-1 layer forming a ring of uniform alignment.
The second conductor unit comprises a plurality of third conductor units which are twisted into a whole.
The plurality of third conductor units are arranged in a mode of n3Layer n3And the layers are sequentially arranged into 1 st, 2 nd, 3 th and 4 th layers from inside to outside, wherein the 1 st layer is provided with 1 third conductor unit, the 2 nd layer is provided with 6 third conductor units, the 3 rd layer is provided with 12 third conductor units, the 4 th layer is provided with 18 third conductor units, and the nth layer is arranged3The layer surrounds the n-th3-1 layer of rings forming a uniform arrangement.
…..
The x-th conductor unit comprises a plurality of x + 1-th conductor units, and the x + 1-th conductor units are twisted into a whole.
The x +1 th conductor units are arranged in nx+1Layer nx+1=2,3,4, which are arranged as the 1 st, 2,3,4 th layers from inside to outside in sequence, the 1 st layer in the center is provided with 1 x +1 th conductor unit, the 2 nd layer is provided with 6 x +1 th conductor units, the 3 rd layer is provided with 12 x +1 th conductor units, the 4 th layer is provided with 18 x +1 th conductor units, the nth layer is provided with 18 x +1 th conductor unitsx+1The layer surrounds the n-thx+1-1 layer arranged uniformly around the circumference.
The x + 1-th conductor unit comprises a plurality of first conductor monofilaments which are twisted into a whole, x = zero, one, two, three, four, five and six … ….
The utility model discloses a cable conductor has woven the conductor layer at strand conductor surface cladding one deck, weaves the effect that the conductor layer can play the protective layer at frequent crooked in-process for the difficult fracture of cable core conductor has improved the life and the security of cable. The twisted conductor is formed by twisting the structure of the composite conductor unit, so that the quality of conductor monofilaments is ensured while the cable conductor meets the requirement of large section and high flexibility, and the cable conductor can adapt to frequent movement, bending or mechanical long-term reciprocating motion.
As the utility model discloses an optimal scheme, weave the conductive layer and adopt the naked copper second conductor monofilament of anaerobic annealing to weave, this kind of material has stronger stretching resistance and tensile degree, can be so that big cross-section conductor core wire cable avoids the monofilament fracture of heart yearn conductor and to insulating damage in frequent bending movement, has improved the quality of product greatly.
Preferably, the diameter of the second conductor monofilament is 0.1-0.3mm, and the conductor monofilament in the diameter range can not only ensure the flexibility of the whole cable conductor, but also ensure the tensile resistance of the braided layer under the action of external force friction and enhance the action strength of the braided layer.
Preferably, the weaving density of the woven conductor layer is more than or equal to 85%, the strength of the woven layer is increased, and the conductor monofilaments are not easy to break in the frequent reciprocating motion of the cable.
As an optimized embodiment of the present invention, the x +1 th conductor unit, the value and the number of layers n of the xx+1The values and the number of the conductor monofilaments are designed according to the arrangement rule by calculating the number of the conductor monofilaments which are contained together according to the summarized area of the cable conductor and the diameter of the conductor monofilaments.
As a preferable embodiment of the present invention, the number of the first conductor monofilaments ranges from 4 to 150. Preferably 10-100.
Furthermore, the first conductor monofilament is an oxygen-free annealed bare copper conductor monofilament, and the material has strong tensile resistance and stretching degree, so that the overall high flexibility of the cable conductor is ensured.
Furthermore, the diameter of the conductor monofilament is 0.05-0.3mm, the conductor monofilament with the diameter range has certain softness, and the conductor monofilament with a larger thickness has too high hardness, so that the softness of the whole cable is not favorable.
Furthermore, the elongation of the first conductor monofilament ranges from 20% to 25%, and the flexibility of the cable conductor as a whole can be ensured.
As the utility model discloses an optimal scheme, stranded conductor stranding pitch diameter ratio is 13~15, the x conductor unit pitch diameter ratio is 18~20, and this kind of pitch diameter ratio restriction both guaranteed that the cable conductor has less bending radius, also made the stranded cable structure closely not loose.
As the utility model discloses a preferred scheme, it is a plurality of first conductor monofilament, a plurality of the equal unanimity of X conductor unit hank system direction can avoid like this that the monofilament is wiped and is hung the wound and influence the electric conductive property of conductor monofilament mechanical properties and conductor heart yearn in production process.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the cable conductor of the utility model coats a layer of braided conductor layer on the outer surface of the stranded conductor, and the braided conductor layer can play the role of a protective layer in the frequent bending process, so that the cable core conductor is not easy to break, and the service life and the safety of the cable are improved;
2. the twisted conductor of the utility model is formed by twisting the structure of the composite conductor unit, so that the quality of conductor monofilament is ensured when the cable conductor meets the requirement of large section and high flexibility, and the cable conductor can adapt to frequent movement, bending or mechanical long-term reciprocating motion;
3. the outer layer of the optimized scheme of the utility model is woven by oxygen-free annealed copper monofilaments, the strength of the woven layer is increased by controlling the diameter of the monofilaments and the weaving density, the core conductor monofilaments of the conductor core cable with large cross section can be ensured not to be broken and damaged by insulation in frequent bending movement, the quality of the cable is greatly improved, the service life of the cable is prolonged, and the safety of the cable is ensured;
4. the first conductor monofilament of the preferred scheme of the utility model adopts the material of the oxygen-free annealed bare copper conductor monofilament, which has stronger tensile resistance and stretching degree, thereby ensuring the overall high flexibility of the cable conductor;
5. the diameter of the first conductor monofilament of the preferred proposal of the utility model is 0.05-0.3mm, the conductor monofilament with the diameter range is selected to have certain softness, and the hardness of the thicker conductor monofilament is too large, which is unfavorable to the softness of the whole cable;
6. the elongation range of the first conductor monofilament in the preferred scheme of the utility model is 20-25%, which can ensure that the cable conductor formed after the rechecking and twisting has high overall flexibility and is not easy to break;
7. the stranding pitch diameter ratio of the stranded conductor of the cable conductor in the preferred scheme of the utility model is 13-15, and the pitch diameter ratio of the x conductor unit is 18-20, so that the conductor core can be ensured to have small bending radius, and the stranded cable core conductor structure is compact and not loose;
8. the utility model discloses it is a plurality of in the preferred scheme first conductor monofilament and a plurality of the direction is unanimous to the x conductor unit hank system, can avoid like this that the monofilament is wiped and is hung a wound and influence the electric conductive property of conductor monofilament mechanical properties and conductor heart yearn in process of production.
Definition of softness: TB/T1484.1-2010 specifies that when the cable outer diameter D is less than or equal to 20mm, the minimum bending radius is not greater than 4D (the minimum bending radius of the shielded cable is not greater than 6D), and when the cable outer diameter D is greater than 20mm, the minimum bending radius is not greater than 6D (the minimum bending radius of the shielded cable is not greater than 8D).
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a cable conductor according to embodiment 2 of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a cable conductor according to embodiment 3 of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of a cable conductor according to embodiment 4 of the present invention;
FIG. 4 is a side view of the cable conductor in external view;
the labels in the figure are: 1-braided conductor layer, 2-stranded conductor, 3-first conductor unit, 4-second conductor unit, 5-third conductor unit, 6-fourth conductor unit.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings 1-4.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
A cable conductor, the cable conductor cross-sectional area is 100mm2The cable conductor comprises a stranded conductor 2 and a braided conductor layer 1, wherein the braided conductor layer 1 has a diameter ofThe oxygen-free annealed copper monofilament with the thickness of 0.12mm is braided, and the braided conductor layer 1 is coated on the outer surface of the stranded conductor 2.
The stranded conductor 2 comprises 37 first conductor units 3, and 37 first conductor units 3 are stranded into a whole.
The arrangement mode of the 37 first conductor units 3 is divided into 4 layers, the 1 st, 2 nd, 3 rd and 4 th layers are sequentially arranged from inside to outside, the 1 st layer in the center is provided with 1 first conductor unit 3, the 2 nd layer is provided with 6 first conductor units 3, the 3 rd layer is provided with 12 first conductor units 3, the 4 th layer is provided with 18 first conductor units 3, and the previous layer is sequentially surrounded from inside to outside to form a circle of uniform arrangement.
The first conductor unit 3 comprises 7 second conductor units 4, and the 7 second conductor units 4 are twisted into a whole.
The 7 second conductor units 4 are arranged in 2 layers, the 1 st and 2 nd layers are sequentially arranged from inside to outside, the 1 st layer is provided with 1 second conductor unit 4 in the center, the 2 nd layer is provided with 6 second conductor units 4, and the 2 nd layer surrounds the 1 st layer to form a circle which is uniformly arranged.
The second conductor unit 4 comprises 7 third conductor units 5, and the 7 third conductor units 5 are twisted into a whole.
The 7 third conductor units 5 are arranged in 2 layers, the 1 st and 2 nd layers are sequentially arranged from inside to outside, the 1 st layer is provided with 1 third conductor unit 5 in the center, the 2 nd layer is provided with 6 third conductor units 5, and the 2 nd layer surrounds the 1 st layer to form a circle which is uniformly arranged.
The third conductor unit 5 comprises 28 oxygen-free annealed copper conductor monofilaments with the diameter of 0.1mm, and the 28 conductor monofilaments are twisted into a whole.
The conductor monofilaments and the conductor units are twisted in the same direction.
Example 2
As shown in FIG. 1, a cross-sectional area of 16mm was prepared2The cable conductor is characterized in that an internal stranded conductor 2 is prepared, an oxygen-free annealed copper monofilament with the diameter of 0.075mm is selected, and the number of wire harnesses and the number of conductor unit layers are designed according to the cross-sectional area and the diameter of the conductor monofilament.
At first, 27 conductor monofilament bunches are taken and twisted into a whole to form the second conductor unit 4,
7 identical second conductor units 4 are manufactured, the arrangement mode is that a first layer is arranged at the center, 6 second layers are uniformly arranged around the first layer, and the 7 second conductor units 4 are twisted into a whole to manufacture the first conductor unit 3.
And manufacturing 19 same first conductor units 3 in a manner that a first layer is arranged at the center in a number of 1, a second layer is uniformly arranged around the first layer in a number of 6, and a third layer is uniformly arranged around the second layer in a number of 12, and twisting the 19 first conductor units 3 into a whole to manufacture the twisted conductor 2.
The conductor monofilaments and the conductor units are twisted in the same direction.
The outer surface of the stranded conductor is coated with a braided conductor layer 1, the braided conductor layer 1 is braided by using oxygen-free annealed copper monofilaments with the diameter of 0.1mm, and the braiding density is 90%.
Example 3
As shown in FIG. 2, a cross-sectional area of 300 mm was prepared2The cable conductor is characterized in that an internal stranded conductor 2 is prepared, an oxygen-free annealed copper monofilament with the diameter of 0.08mm is selected, and the number of wire harnesses and the number of conductor unit layers are designed according to the cross section area and the diameter of the conductor monofilament.
At first, 18 conductor monofilament bunches are taken and twisted into a whole to form a fourth conductor unit 6,
and 7 identical fourth conductor units 6 are manufactured, the arrangement mode is that the first layer is 1 in the center, the second layer is uniformly arranged for 6 around the first layer, and the 7 fourth conductor units 6 are twisted into a whole to manufacture the third conductor unit 5.
7 identical third conductor units 5 are manufactured, the arrangement mode is that a first layer is arranged at the center, 6 third conductor units are uniformly arranged on a second layer surrounding the first layer, and the 7 third conductor units 5 are twisted into a whole to manufacture a second conductor unit 4.
7 identical second conductor units 4 are manufactured, the arrangement mode is that a first layer is arranged at the center, 6 second layers are uniformly arranged around the first layer, and the 7 second conductor units 4 are twisted into a whole to manufacture the first conductor unit 3.
And manufacturing 19 same first conductor units 3 in a manner that a first layer is arranged at the center in a number of 1, a second layer is uniformly arranged around the first layer in a number of 6, and a third layer is uniformly arranged around the second layer in a number of 12, and twisting the 19 first conductor units 3 into a whole to manufacture the twisted conductor 2.
The conductor monofilaments and the conductor units are twisted in the same direction.
The outer surface of the stranded conductor 2 is coated with a braided conductor layer 1, the braided conductor layer 1 is braided by using oxygen-free annealed copper monofilaments with the diameter of 0.15mm, and the braiding density is 85%.
Example 4
As shown in FIG. 3, a cross-sectional area of 35 mm was prepared2The inner stranded conductor 2 is first prepared.
The conductor monofilament is drawn by selecting a high-purity oxygen-free soft round copper rod of Nanjing Huaxin T1, wherein the elongation of the conductor monofilament finished product is required to be 20-25%.
Because the monofilament diameter is too little in the bunch, adopt back twist pay off rack, reduce the tensile mode of every drawing drum, carry out bunch production under the condition that accords with the technological requirement to guarantee that monofilament mechanical properties does not reduce, strand 13 conductor monofilaments into an organic whole, make third conductor unit 5.
Then, 7 third conductor units 5 are manufactured on a back-twist frame twisting machine and are arranged according to a certain mode, the number of the first layer at the center is 1, the number of the second layer is uniformly arranged around the first layer for 6, and the 7 third conductor units 5 are twisted into a whole to manufacture a second conductor unit 4.
And (3) similarly, manufacturing 7 second conductor units 4 on a back-twist frame twisting machine, arranging the second conductor units according to a certain mode, wherein the number of the central first layers is 1, the number of the second layers is 6, the second layers are uniformly arranged around the first layers, and twisting the 7 second conductor units 4 into a whole to manufacture the first conductor unit 3.
On the frame strander that moves back, make 7 first conductor units 3, arrange according to certain mode, 1 in the center first layer, 6 are evenly arranged around the first layer in the second layer, and 7 first conductor units 3 are twisted into an organic whole, make stranded conductor 2.
A bare copper soft round copper wire with the wire diameter of 0.12mm is selected for weaving, and the weaving density is designed to be 87%.
And finally, coating the braided conductor layer 1 on the outer surface of the stranded conductor 2.
The conductor core wire structure of the structure is compact and round, and when a cable produced by using the transparent insulating material is used for winding tests, the wire breakage phenomenon does not occur after 30000 times, 50000 times and 100000 times of winding tests. 37mm for this scheme2The cable produced by the conductor has a laying allowable bending radius of 2.5D. And the insulation immersion pressure resistance test after the cable winding test is qualified (alternating current 50Hz, 3000V/5 min).
And (3) testing: part of the test data is shown in Table 1
Table 1 partial experimental data
To sum up, adopt the utility model discloses a high soft cable conductor of big cross-section is applicable to 16mm2~300mm2The production of the cable with large section, high flexibility, small bending radius (the minimum bending radius is 4 times of the diameter of the cable), frequent movement, bending or mechanical long-term reciprocating motion can ensure that no wire breakage occurs after 10 ten thousand winding tests.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A cable conductor, characterized in that the cable conductor comprises a stranded conductor (2) and a braided conductor layer (1), the braided conductor layer (1) being coated on the outer surface of the stranded conductor (2);
the stranded conductor (2) comprises a plurality of first conductor units (3), and the first conductor units (3) are stranded into a whole;
a plurality of the first conductor units (3) arranged in a manner of n1Layer n1=2,3,4, sequentially arranged in 1,2,3,4 layers from inside to outside, 1 first conductor unit (3) arranged in the central 1 st layer, and 2 nd conductor unit6 first conductor units (3) are arranged in layers, 12 first conductor units (3) are arranged in the 3 rd layer, 18 first conductor units (3) are arranged in the 4 th layer, and the n1The layer surrounds the n-th1-1 layer forming a uniform array;
the first conductor unit (3) comprises a plurality of second conductor units (4), and the second conductor units (4) are twisted into a whole;
a plurality of the second conductor units (4) arranged in a manner of n2Layer n2The number of layers is 1,2,3 and 4, the layers are sequentially arranged from inside to outside, the central layer 1 is provided with 1 second conductor unit (4), the layer 2 is provided with 6 second conductor units (4), the layer 3 is provided with 12 second conductor units (4), the layer 4 is provided with 18 second conductor units (4), the nth layer2The layer surrounds the n-th2-1 layer forming a uniform array;
…..
the x conductor unit comprises a plurality of x +1 conductor units, and the x +1 conductor units are twisted into a whole;
a plurality of the (x + 1) th conductor units arranged in an n-th patternx+1Layer nx+1=2,3,4, set up to 1,2,3,4 in proper order from inside to outside, central 1 st layer sets up 1 the x +1 conductor unit, 2 nd layer sets up 6 the x +1 conductor unit, 3 rd layer sets up 12 the x +1 conductor unit, the 4 th layer sets up 18 the x +1 conductor unit, the nthx+1The layer surrounds the n-thx+1-1 layer forming a uniform array;
the x + 1-th conductor unit comprises a plurality of first conductor monofilaments, the first conductor monofilaments are twisted into a whole, and x = two and three.
2. Cable conductor according to claim 1, characterized in that the braided conductor layer (1) is an oxygen free annealed bare copper second conductor monofilament braided structure.
3. The cable conductor according to claim 2, characterized in that the second conductor monofilament diameter is 0.1-0.3 mm.
4. Cable conductor according to claim 2, characterized in that the braided conductor layer (1) has a braiding density of 85% or more.
5. The cable conductor according to claim 1, wherein the first conductor monofilament is an oxygen free annealed bare copper conductor monofilament.
6. The cable conductor according to claim 1, characterized in that the first conductor monofilament diameter is 0.05-0.3 mm.
7. The cable conductor according to claim 1, wherein the first conductor monofilament has an elongation of 20 to 25%.
8. The cable conductor according to claim 1, wherein the stranded conductor (2) has a cable pitch ratio of 13-15 and the xth conductor unit pitch ratio of 18-20.
9. The cable conductor according to claim 1, wherein a plurality of said first conductor monofilaments and a plurality of said xth conductor units are all twisted structures having the same direction.
10. The cable conductor according to any one of claims 1 to 9, wherein the cable conductor has a cross-sectional area of 16mm2～300mm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921332636.0U CN210325249U (en) | 2019-08-16 | 2019-08-16 | Cable conductor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921332636.0U CN210325249U (en) | 2019-08-16 | 2019-08-16 | Cable conductor |
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| CN210325249U true CN210325249U (en) | 2020-04-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024076212A1 (en) * | 2022-10-07 | 2024-04-11 | 엘에스전선 주식회사 | Highly flexible conductor for cable |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024076212A1 (en) * | 2022-10-07 | 2024-04-11 | 엘에스전선 주식회사 | Highly flexible conductor for cable |
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Address after: 610000 new route 18, high tech Zone (West District), Chengdu, Sichuan Province Patentee after: Chengdu Siwei Technology Co.,Ltd. Patentee after: CHENGDU ZHONGLING RADIO COMMUNICATIONS Co.,Ltd. Address before: No. 18, Xinhang Road, High-tech Zone (West Area), Chengdu, Sichuan 611731 Patentee before: CHENGDU PUTIAN TELECOMMUNICATIONS CABLE CO.,LTD. Patentee before: CHENGDU ZHONGLING RADIO COMMUNICATIONS Co.,Ltd. |